Like SuperRanger we operate our 747-400 Rollers with three derate settings, TO TO1 and TO2 and then use an assumed temperature on top of that. We only changed to using TO2 regularly a couple of years ago. Untiil then we considered it too complex and as one manager said at the time, "What kind of pilot would take off using less than climb thrust?"
Economics overcame airmanship and now we use TO2 with up to a 61 degree C assumed temperature. We are seeing a lot more of the far end of runways these days! And yes, at climb thrust selection the thrust does increase from around 1.42 to 1.46 EPR.
In the engine failure case it really staggers in the third and fourth segment and it takes ages to get to clean configuration, watching the hills go by...
Pilots don't like it but accountants do so its a done deal. Anyone else use TO2 on a 747?